To provide a sensor which can respond flexibly to the specification of a sensor IC.

As shown on Fig. 1, a current sensor 1 comprises: a sensor IC2 having a plurality of terminals (first terminal 21 through third terminal 23); a plurality of lead frames (first lead frame 41 through third lead frame 43) having intervals different from those of the plurality of terminals; and a connection 3 having a plurality of conductors (first conductor 31 through third conductor 33) in which the intervals of the terminals on one end side (first terminal 311, first terminal 321 and first terminal 331) respond to the intervals of a plurality of terminals of the sensor IC2, and the intervals of the terminals on the other end side (second terminal 312, second terminal 322 and second terminal 332) respond to the intervals of a plurality of lead frames.